Thank you for selecting Aerospace Aviation360 as your go-to distributor of part number 74LS157P found under Microcircuit Digital by Sprague Palm Beach Inc. The National Stock Number assigned to this part is 5962010500921, and the Federal Supply Class is 5962 Microcircuits Electronic. Our website is owned and operated by ASAP Semiconductor, a leading distributor of aviation and aerospace part numbers like 74LS157P.